CAJ | 학술논문

提出了一种中心-迎风型混合格式.在该混合格式中,中心差分格式和Roe通量差分裂格式进行混合,它们之间的切换通过一个二进制开关函数实现.为了验证该混合格式在计算绕曲面物体可压缩湍流问题时的可靠性,尤其是带激波的流动问题,采用分离涡模拟方法计算了3个典型的问题.研究结果表明,当前数值结果与已有的实验数据相符较好,这说明该混合格式可以用来研究带激波和湍流的曲面物体可压缩绕流问题.
제출료일충중심-영풍형혼합격식.재해혼합격식중,중심차분격식화Roe통량차분렬격식진행혼합,타문지간적절환통과일개이진제개관함수실현.위료험증해혼합격식재계산요곡면물체가압축단류문제시적가고성,우기시대격파적류동문제,채용분리와모의방법계산료3개전형적문제.연구결과표명,당전수치결과여이유적실험수거상부교호,저설명해혼합격식가이용래연구대격파화단류적곡면물체가압축요류문제.
A hybrid central-upwind scheme is proposed.Two sub-schemes,the central difference scheme and the Roe's flux difference splitting scheme,are hybridized by means of a binary sensor function.In order to examine the capability of the proposed hybrid scheme in computing compressible turbulent flow around a curved surface body,especially the flow involving shock wave,three typical cases are investigated by using detached-eddy simulation technique.Numerical results show good agreements with the experimental measurements.The present hybrid scheme can be applied to simulating the compressible flow around a curved surface body involving shock wave and turbulence.